Investments in Real Estate - Acquisitions (Details) ft² in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2022 USD ($) ft² property	Mar. 31, 2021 USD ($) ft² property
Real Estate [Line Items]
Number of properties | property	213	110
Leasable square feet (sq ft) | ft²	7,267	4,829
Investment | $	$ 1,555.3	$ 1,027.8
Weighted average lease term (years)	12 years 3 months 18 days	12 years 7 months 6 days
Initial average cash lease yield (percent)	5.60%	5.30%
New properties
Real Estate [Line Items]
Number of properties, new | property	160	89
Leasable square feet (sq ft) | ft²	5,399	3,232
Investment | $	$ 1,424.0	$ 969.9
Weighted average lease term (years)	11 years 9 months 18 days	12 years 4 months 24 days
Initial average cash lease yield (percent)	5.60%	5.30%
New properties | U.S.
Real Estate [Line Items]
Number of properties, new | property	139	77
Leasable square feet (sq ft) | ft²	2,627	2,299
Investment | $	$ 629.8	$ 566.9
Weighted average lease term (years)	15 years	13 years 6 months
Initial average cash lease yield (percent)	5.70%	5.60%
New properties | Europe (UK)
Real Estate [Line Items]
Number of properties, new | property	21	12
Leasable square feet (sq ft) | ft²	2,772	933
Investment | $	$ 794.2	$ 403.0
Weighted average lease term (years)	8 years 10 months 24 days	10 years 7 months 6 days
Initial average cash lease yield (percent)	5.50%	4.90%
Properties under development
Real Estate [Line Items]
Number of properties, under development | property	53	21
Leasable square feet (sq ft) | ft²	1,868	1,597
Investment | $	$ 131.3	$ 57.9
Weighted average lease term (years)	17 years 3 months 18 days	15 years 6 months
Initial average cash lease yield (percent)	5.70%	5.60%